<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>bind</title>
</head>

<body>
    <button>点击</button>
    <button>点击</button>
    <button>点击</button>
    <script>
        // var btn = document.querySelector('button');
        // btn.onclick = function() {
        //     this.disabled = true; //这个this指向的是btn这个按钮
        //     setTimeout(function() {
        //         this.disabled = false
        //     }.bind(this), 1000);
        // };
        const btns = document.querySelectorAll('button');
        for (let i = 0; i < btns.length; i++) {
            btns[i].onclick = function() {
                this.disabled = true;
                setTimeout(function() {
                    this.disabled = false
                }.bind(this), 1000);
            }
        }
    </script>
</body>

</html>